Optimize Web Fonts to Increase Performance • Tips
Debunking Responsive CSS Performance Myths
dConstruct optimisation
WebPagetest - Website Performance and Optimization Test
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Closure Tools - Google Code
Open source JavaScript compiler, debugger, library, and templating system from Google
High Performance Web Sites :: @font-face and performance
How does @font-face impact performance
Duplicate Annihilator
Duplicate Annihilator takes on the time consuming task comparing the images in your iPhoto library using effective algorithms to make sure that no duplicates escapes. When found the duplicate will either be marked with a description of your choice to make it searchable or simply moved to iPhotos trashcan.